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| Criterion |  Decision Making Delphi Method |  Architecture C4 Model |  Decision Making Decision Rights Mapping |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. |
Complexitydifferent | High | Low | Medium | Medium |
Timedifferent | 1-4 Wochen | 1-4 h | 90-180 min | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 6-30 Experten | 1-5 | 4-12 | 3-20 Reviewer |
Formatdifferent | Async | Workshop + async | Workshop | Async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Context Diagram, Container Diagram, Component Diagram | Decision Rights Matrix, Agreement | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | ForecastingExpertsDecisionStrategy | ArchitectureCommunicationVisualization | DecisionGovernanceAlignmentResponsibility | ArchitectureDecisionAsyncGovernance |